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A195729 Decimal expansion of arctan(3). 1
1, 2, 4, 9, 0, 4, 5, 7, 7, 2, 3, 9, 8, 2, 5, 4, 4, 2, 5, 8, 2, 9, 9, 1, 7, 0, 7, 7, 2, 8, 1, 0, 9, 0, 1, 2, 3, 0, 7, 7, 8, 2, 9, 4, 0, 4, 1, 2, 9, 8, 9, 6, 7, 1, 9, 0, 5, 4, 6, 6, 9, 2, 3, 6, 7, 9, 7, 1, 5, 1, 9, 6, 5, 7, 3, 7, 2, 9, 3, 9, 5, 4, 9, 5, 7, 6, 0, 8, 9, 9, 0, 3, 2, 0, 4, 1, 7, 1, 5, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also arctan(1) + arctan(1/2). - Charles R Greathouse IV, Sep 23 2014

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

EXAMPLE

arctan(3) = 1.2490457723982544258299170772...

MATHEMATICA

r = 3;

N[ArcTan[r], 100]

RealDigits[%]  (* A195729 *)

N[ArcCot[r], 100]

RealDigits[%]  (* A105531 *)

N[ArcSec[r], 100]

RealDigits[%]  (* A137914 *)

N[ArcCsc[r], 100]

RealDigits[%]  (* A188615 *)

PROG

(PARI) atan(3) \\ Charles R Greathouse IV, Sep 23 2014

(MAGMA) SetDefaultRealField(RealField(100)); Arctan(3); // G. C. Greubel, Aug 20 2018

CROSSREFS

Cf. A105531, A137914, A188615.

Sequence in context: A103097 A062286 A071071 * A303950 A011181 A134822

Adjacent sequences:  A195726 A195727 A195728 * A195730 A195731 A195732

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

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Last modified July 22 10:34 EDT 2019. Contains 325219 sequences. (Running on oeis4.)